Well, since Kalanyr is openly scouting, he finds the following, which soon become public information:
Polaris, the continent near the south pole of Oerth, is empty of humans, demihumans, or humanoids.
Telchuria, the continent around the north pole of Oerth, has the Storm-Riders, and several independent small nations around the coast.
Fireland, the large island, lives up to it's name.
It is filled with volcanoes and lava streams.
Fireland is the home of a race of people that look human, and they are indeed native to Oerth.
They are not native to the Elemental Plane of Fire, nor are they Elementals.
They radiate extreme heat.
They are comfortable at temperatures of two thousand degrees.
They wear no clothing except metal harnesses, and magical transparent gauze.
Their cities are hand shaped by them out of lava, which they work as if it were mud.
They seem to breathe sulphuric dioxide and carbon dioxide without trouble.
They are a hedonistic and depraved people, lazy and indolent.
Their favorite activity is to mate while bathing in the streams of lava (they have great strength, and moving lava is like water to them.)
Their magic is powerful, and their offensive magic is more powerful: they can hurl blasts of white heat from their bodies that will melt rock, turn steel white with the heat, and even make adamantium glow a dull red.
Living things hit by this heat evaporate.
Yet they cannot be bothered by the troubles and problems of Oerik.
They are happy in their magnificent cities of basalt and crystal, and care not for war or other follies.
Not when they can pass the time dancing and celebrating.
They point out that there is a colony of their kind somewhere in the Flanaess.
They do not know where, and cannot find out, so further inquiries in that direction are useless.
They tell you attempting to scry their colony would be useless also, for their magic is too strong.
They state their colony is much more aggressive that they are, and is likely (they yawn) to come out and start burning down whole cities and civilizations any time now.